Jawab:
Penjelasan dengan langkah-langkah:
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vektor a (a - b)
= a.a - a.b
= (|a| |a| cos a ) - (|a| |b| cos b)
= ( 4 x 4 cos 0°) - (4 x 3 cos 60°)
= 16 - 6
= 10
Jawab:
Penjelasan dengan langkah-langkah: